4. At 25 °C, 1.0 g of caffeine will dissolve in 47 mL of water, in 8.1 mL of chloroform, in 86 mL of benzene, or in 370 mL of diethyl ether. Calculate the solubility (in grams/100 mL) of caffeine in these four solvents. Calculate the partition coefficient of caffeine between water and each of the other three solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an aqueous solution?

Question
4. At 25 °C, 1.0 g of caffeine will dissolve in 47 mL of water, in 8.1 mL of chloroform, in 86 mL of
benzene, or in 370 mL of diethyl ether. Calculate the solubility (in grams/100 mL) of caffeine in these four
solvents. Calculate the partition coefficient of caffeine between water and each of the other three
solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an
aqueous solution?
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Transcribed Image Text

4. At 25 °C, 1.0 g of caffeine will dissolve in 47 mL of water, in 8.1 mL of chloroform, in 86 mL of benzene, or in 370 mL of diethyl ether. Calculate the solubility (in grams/100 mL) of caffeine in these four solvents. Calculate the partition coefficient of caffeine between water and each of the other three solvents. Which of these three organic solvents would be the best choice for extracting caffeine from an aqueous solution?

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